Battery pack system and method for waking up a charge control circuit of a mobile communication device
First Claim
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1. A battery pack for a mobile communication device, comprising:
- an inductive charging interface for inductively coupling to an inductive power supply;
at least one battery cell coupled to the inductive charging interface, wherein the at least one battery cell is charged by the inductive charging interface;
a controller for controlling the inductive charging interface;
a radio interface for coupling the battery pack to the mobile communication device; and
a pass through line coupled between the inductive charging interface and the radio interface for waking up a charge monitoring circuit of the mobile communication device when the inductive charging interface is active.
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Abstract
A battery pack (104) has an inductive charging interface (112) for charging a battery cell (114) upon coupling to an inductive power supply (210). The battery pack is coupled to a mobile communication device via a radio interface (110), through with a voltage level is applied to a charge monitoring circuit (106). When the mobile communication device is powered off, the voltage level wakes up the charge monitoring circuit so that the charging status of the battery cell can be displayed on the mobile communication device.
40 Citations
19 Claims
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1. A battery pack for a mobile communication device, comprising:
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an inductive charging interface for inductively coupling to an inductive power supply;
at least one battery cell coupled to the inductive charging interface, wherein the at least one battery cell is charged by the inductive charging interface;
a controller for controlling the inductive charging interface;
a radio interface for coupling the battery pack to the mobile communication device; and
a pass through line coupled between the inductive charging interface and the radio interface for waking up a charge monitoring circuit of the mobile communication device when the inductive charging interface is active. - View Dependent Claims (2, 3, 4, 5)
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6. A method of waking up a charge monitoring circuit of a mobile communication device from a battery pack having an inductive charging interface, comprising:
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coupling the battery pack to the mobile communication device at a radio interface, wherein the mobile communication device is powered off;
coupling the inductive charging interface to an inductive power supply;
applying a voltage level from the battery pack to the charge monitoring circuit of the mobile communication device through the radio interface; and
in response to applying the voltage level to the charge monitoring circuit;
waking up the charge monitoring circuit of the mobile communication device to monitor charging of a battery cell of the battery pack, and providing a charging status on a user interface of the mobile communication device. - View Dependent Claims (7, 8, 9, 10)
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11. A charging system for providing a charging status on a mobile communication device which is presently power off, the mobile communication device coupled to a battery pack at a radio interface, the system comprising:
a charge monitoring circuit disposed in the mobile communication device, the charge monitoring circuit being activated upon application of a voltage level on a power input line of the mobile communication device, and upon becoming activated determining which of a radio power supply and inductive power supply are available to charge the battery pack. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
Specification